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Suborder:
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Otoceratina
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Family:
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Etoushanoceratidae
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Genus:
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Jinjiangoceras |
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Qualifier:
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gy |
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Author:
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Zhao et al. 1978,p.102
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Valid:
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Prototoceras Spath [TAX5138 ] |
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Lower Boundary:
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Anderssonoc./Prototoc.--Araxoc./Kongl., 258 million years
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Upper Boundary:
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Araxoc./Konglingites--Sanyangites, 256 million years
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